/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.nacos.config.server.monitor;

import java.text.DecimalFormat;
import java.util.concurrent.atomic.AtomicLong;

/**
 * Response Monitory
 * 
 * @author Nacos
 *
 */
public class ResponseMonitor {
	static AtomicLong[] getConfigCountDetail = new AtomicLong[8];
	static AtomicLong getConfigCount = new AtomicLong();
	private static final int MS_50 = 50;
	private static final int MS_100 = 100;
	private static final int MS_200 = 200;
	private static final int MS_500 = 500;
	private static final int MS_1000 = 1000;
	private static final int MS_2000 = 2000;
	private static final int MS_3000 = 3000;

	static{
		refresh();
	}
	
	public static void refresh(){
		for(int i = 0; i< getConfigCountDetail.length;i++){
			getConfigCountDetail[i] = new AtomicLong();
		}
	}
	
	public static void addConfigTime(long time){
		getConfigCount.incrementAndGet();
		if(time < MS_50){
			getConfigCountDetail[0].incrementAndGet();
		} else if(time < MS_100) {
			getConfigCountDetail[1].incrementAndGet();
		} else if (time < MS_200){
			getConfigCountDetail[2].incrementAndGet();
		} else if(time < MS_500){
			getConfigCountDetail[3].incrementAndGet();
		} else if(time < MS_1000){
			getConfigCountDetail[4].incrementAndGet();
		} else if(time < MS_2000){
			getConfigCountDetail[5].incrementAndGet();
		} else if(time < MS_3000){
			getConfigCountDetail[6].incrementAndGet();
		} else {
			getConfigCountDetail[7].incrementAndGet();
		}
	}
	
	public static String getStringForPrint(){
		DecimalFormat df = new DecimalFormat("##.0");
		StringBuilder s = new StringBuilder("getConfig monitor:\r\n");
		s.append("0-50ms:" + df.format(getConfigCountDetail[0].getAndSet(0)*100/ getConfigCount.get())).append("%\r\n");
		s.append("100-200ms:" + df.format(getConfigCountDetail[2].getAndSet(0)*100/ getConfigCount.get())).append("%\r\n");
		s.append("200-500ms:" + df.format(getConfigCountDetail[3].getAndSet(0)*100/ getConfigCount.get())).append("%\r\n");
		s.append("500-1000ms:" + df.format(getConfigCountDetail[4].getAndSet(0)*100/ getConfigCount.get())).append("%\r\n");
		s.append("1000-2000ms:" + df.format(getConfigCountDetail[5].getAndSet(0)*100/ getConfigCount.get())).append("%\r\n");
		s.append("2000-3000ms:" + df.format(getConfigCountDetail[6].getAndSet(0)*100/ getConfigCount.get())).append("%\r\n");
		s.append("3000以上ms:" + df.format(getConfigCountDetail[7].getAndSet(0)*100/ getConfigCount.getAndSet(0))).append("%\r\n");
		return s.toString();
	}
	
	public static void main(String[] args) {
		ResponseMonitor.addConfigTime(10);
		ResponseMonitor.addConfigTime(10);
		ResponseMonitor.addConfigTime(10);
		ResponseMonitor.addConfigTime(10);
		ResponseMonitor.addConfigTime(100);
		ResponseMonitor.addConfigTime(150);
		ResponseMonitor.addConfigTime(250);
		ResponseMonitor.addConfigTime(350);
		ResponseMonitor.addConfigTime(750);
		ResponseMonitor.addConfigTime(15000);
		System.out.println(ResponseMonitor.getStringForPrint());
		System.out.println(ResponseMonitor.getStringForPrint());
		
	}
}
